Example would be:
Studies have long shown that people who drive red cars receive more speeding tickets from the police than do those
who drive cars of other colors. Researchers have thus concluded that the color of a car influences its driver’s
behavior.
The argument depends upon which one of the following assumptions?
(A) Drivers of black cars receive the second-most speeding tickets.
(B) Red cars do not attract more attention from the police than do cars of other colors.
(C) Police officers do not drive red cars.
(D) Red cars do not receive any more parking tickets, on average, than do cars of other colors.
(E) Drivers of red cars who are ticketed for speeding are able to appeal their tickets more often than
drivers of other color cars.

or
While many people think of the lottery as a harmless way to have fun and possibly win some money, buying lottery
tickets is a form of gambling. Therefore, public officials shouldn’t buy lottery tickets.
Which of the following, if true, would most strengthen the conclusion?
(A) Individuals who play the lottery are less likely to win a big payout than they are to be killed in a car
crash.
(B) Some public officials are guilty of much more serious offenses than gambling.
(C) Public officials shouldn’t gamble.
(D) Many public officials are easily tempted to violate rules governing their positions.
(E) Most lottery winners are not made as happy by their winnings as they expected.